Table duplication in PostgreSQL

First of all, congratulation for all the work to try to incorporate PostgreSQL in HeidiSQL. This is great !

I am testing the last (at that time) r4805 version.
My PostgreSQL version is 9.3.5, on Windows 7 64 bits.

On my database, I have several schemas, some of them with tables that have the same name (but inside different schemas, this is not a problem).
Example :
schema1
- mytable1
- mytable2
schema2
- mytable1
- mytable3

In the database browser, in my schema1 (and also in schema2), I see "mytable1" duplicated.

The problem seems to come from this query, executed to get the tables list of a schema :